Escutcheon plate for an enclosure



FIG. 1 is a left front perspective view of an escutcheon plate for an enclosure showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The portions of the drawings shown in broken lines represent environmental structure and form no part of the claimed design. 

The ornamental design for an escutcheon plate for an enclosure, as shown and described. 